I'm sure you can get more facts than you'll ever need, by a web search.
does anyone know any facts about ww1 and www2 please for my English work?
It sounds as though you need a focal point -- something rather smaller than the two world wars.
Here are a few WW2 topics you can Google that will give you something to write about. (There are plenty of videos available, both news reports and fictional, that will help you to get a bigger picture.) My list is NOT chronological.
The Wehrmacht
The Third Reich
The Holocaust
The Battle for the Atlantic
The Bismarck
Dunkirk
The Battle of Britain
Pearl Harbor
War in the Pacific
PT109
Manhattan Project
Hiroshima and Nagasaki
The Normandy Invasion
German occupation of Europe.
The Quisling and Vichy puppet governments.
The Maquis